1- http://localhost/phpmyadmin launches my phpMyAdmin, but /phpmyadmin/ folder does not exist into /htdocs/ folder. How is solved (or resolved) this (redirection)?

2- I'm planning to test a new version of phpMyAdmin. In order to do this, I not removed old phpMyAdmin folder, but I have installed another folder called phpMyAdmin323. How can I make http://localhost/phpmyadmin call /phpMyAdmin323/ instead of /phpMyAdmin/?